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-rw-r--r--test/CodeGen/AArch64/GlobalISel/legalize-phi.mir605
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diff --git a/test/CodeGen/AArch64/GlobalISel/legalize-phi.mir b/test/CodeGen/AArch64/GlobalISel/legalize-phi.mir
new file mode 100644
index 0000000000000..807c2320058a5
--- /dev/null
+++ b/test/CodeGen/AArch64/GlobalISel/legalize-phi.mir
@@ -0,0 +1,605 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=aarch64-unknown-unknown -global-isel -verify-machineinstrs -run-pass=legalizer %s -o - | FileCheck %s
+--- |
+ ; ModuleID = '/tmp/test.ll'
+ source_filename = "/tmp/test.ll"
+ target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
+ target triple = "aarch64-unknown-unknown"
+
+ define i32 @legalize_phi(i32 %argc) {
+ entry:
+ ret i32 0
+ }
+
+ define i64* @legalize_phi_ptr(i64* %a, i64* %b, i1 %cond) {
+ entry:
+ ret i64* null
+ }
+
+ define i32 @legalize_phi_empty(i32 %argc) {
+ entry:
+ ret i32 0
+ }
+
+ define i32 @legalize_phi_loop(i32 %argc) {
+ entry:
+ ret i32 0
+ }
+
+ define i32 @legalize_phi_cycle(i32 %argc) {
+ entry:
+ ret i32 0
+ }
+ define i32 @legalize_phi_same_bb(i32 %argc) {
+ entry:
+ ret i32 0
+ }
+
+ define i32 @legalize_phi_diff_bb(i32 %argc, i32 %argc2) {
+ entry:
+ ret i32 0
+ }
+
+...
+---
+name: legalize_phi
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: _, preferred-register: '' }
+ - { id: 1, class: _, preferred-register: '' }
+ - { id: 2, class: _, preferred-register: '' }
+ - { id: 3, class: _, preferred-register: '' }
+ - { id: 4, class: _, preferred-register: '' }
+ - { id: 5, class: _, preferred-register: '' }
+ - { id: 6, class: _, preferred-register: '' }
+ - { id: 7, class: _, preferred-register: '' }
+ - { id: 8, class: _, preferred-register: '' }
+ - { id: 9, class: _, preferred-register: '' }
+ - { id: 10, class: _, preferred-register: '' }
+liveins:
+body: |
+ ; CHECK-LABEL: name: legalize_phi
+ ; CHECK: bb.0:
+ ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK: liveins: %w0
+ ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+ ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+ ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
+ ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[COPY]](s32), [[C]]
+ ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+ ; CHECK: G_BRCOND [[TRUNC]](s1), %bb.1
+ ; CHECK: G_BR %bb.2
+ ; CHECK: bb.1:
+ ; CHECK: successors: %bb.3(0x80000000)
+ ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C1]]
+ ; CHECK: [[TRUNC1:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+ ; CHECK: G_BR %bb.3
+ ; CHECK: bb.2:
+ ; CHECK: successors: %bb.3(0x80000000)
+ ; CHECK: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C2]]
+ ; CHECK: [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[ADD1]](s32)
+ ; CHECK: bb.3:
+ ; CHECK: [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC1]](s16), %bb.1, [[TRUNC2]](s16), %bb.2
+ ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+ ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+ ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C3]]
+ ; CHECK: %w0 = COPY [[AND]](s32)
+ ; CHECK: RET_ReallyLR implicit %w0
+ bb.0:
+ ; Test that we insert legalization artifacts(Truncs here) into the correct BBs
+ ; while legalizing the G_PHI to s16.
+
+
+ successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ liveins: %w0
+
+ %0(s32) = COPY %w0
+ %1(s32) = G_CONSTANT i32 0
+ %3(s32) = G_CONSTANT i32 1
+ %6(s32) = G_CONSTANT i32 2
+ %2(s1) = G_ICMP intpred(ugt), %0(s32), %1
+ G_BRCOND %2(s1), %bb.1
+ G_BR %bb.2
+
+ bb.1:
+ successors: %bb.3(0x80000000)
+
+ %4(s32) = G_ADD %0, %3
+ %5(s1) = G_TRUNC %4(s32)
+ G_BR %bb.3
+
+ bb.2:
+ successors: %bb.3(0x80000000)
+
+ %7(s32) = G_ADD %0, %6
+ %8(s1) = G_TRUNC %7(s32)
+
+ bb.3:
+ %9(s1) = G_PHI %5(s1), %bb.1, %8(s1), %bb.2
+ %10(s32) = G_ZEXT %9(s1)
+ %w0 = COPY %10(s32)
+ RET_ReallyLR implicit %w0
+
+...
+---
+name: legalize_phi_ptr
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: _, preferred-register: '' }
+ - { id: 1, class: _, preferred-register: '' }
+ - { id: 2, class: _, preferred-register: '' }
+ - { id: 3, class: _, preferred-register: '' }
+ - { id: 4, class: _, preferred-register: '' }
+ - { id: 5, class: _, preferred-register: '' }
+liveins:
+body: |
+ ; CHECK-LABEL: name: legalize_phi_ptr
+ ; CHECK: bb.0:
+ ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK: liveins: %w2, %x0, %x1
+ ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY %x0
+ ; CHECK: [[COPY1:%[0-9]+]]:_(p0) = COPY %x1
+ ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY %w2
+ ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[COPY2]](s32)
+ ; CHECK: G_BRCOND [[TRUNC]](s1), %bb.1
+ ; CHECK: G_BR %bb.2
+ ; CHECK: bb.1:
+ ; CHECK: successors: %bb.2(0x80000000)
+ ; CHECK: bb.2:
+ ; CHECK: [[PHI:%[0-9]+]]:_(p0) = G_PHI [[COPY]](p0), %bb.0, [[COPY1]](p0), %bb.1
+ ; CHECK: %x0 = COPY [[PHI]](p0)
+ ; CHECK: RET_ReallyLR implicit %x0
+ bb.1:
+
+ successors: %bb.2, %bb.3
+ liveins: %w2, %x0, %x1
+
+ %0(p0) = COPY %x0
+ %1(p0) = COPY %x1
+ %4(s32) = COPY %w2
+ %2(s1) = G_TRUNC %4(s32)
+ G_BRCOND %2(s1), %bb.2
+ G_BR %bb.3
+
+ bb.2:
+ successors: %bb.3
+
+ bb.3:
+ %3(p0) = G_PHI %0(p0), %bb.1, %1(p0), %bb.2
+ %x0 = COPY %3(p0)
+ RET_ReallyLR implicit %x0
+
+...
+---
+name: legalize_phi_empty
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: _, preferred-register: '' }
+ - { id: 1, class: _, preferred-register: '' }
+ - { id: 2, class: _, preferred-register: '' }
+ - { id: 3, class: _, preferred-register: '' }
+ - { id: 4, class: _, preferred-register: '' }
+ - { id: 5, class: _, preferred-register: '' }
+ - { id: 6, class: _, preferred-register: '' }
+ - { id: 7, class: _, preferred-register: '' }
+ - { id: 8, class: _, preferred-register: '' }
+ - { id: 9, class: _, preferred-register: '' }
+ - { id: 10, class: _, preferred-register: '' }
+liveins:
+body: |
+ ; CHECK-LABEL: name: legalize_phi_empty
+ ; CHECK: bb.0:
+ ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK: liveins: %w0
+ ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+ ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 3
+ ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+ ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[COPY]](s32), [[C]]
+ ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+ ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C1]]
+ ; CHECK: G_BRCOND [[TRUNC]](s1), %bb.1
+ ; CHECK: G_BR %bb.2
+ ; CHECK: bb.1:
+ ; CHECK: successors: %bb.3(0x80000000)
+ ; CHECK: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C2]]
+ ; CHECK: [[TRUNC1:%[0-9]+]]:_(s16) = G_TRUNC [[ADD1]](s32)
+ ; CHECK: G_BR %bb.3
+ ; CHECK: bb.2:
+ ; CHECK: successors: %bb.3(0x80000000)
+ ; CHECK: [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+ ; CHECK: bb.3:
+ ; CHECK: [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC1]](s16), %bb.1, [[TRUNC2]](s16), %bb.2
+ ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+ ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+ ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C3]]
+ ; CHECK: %w0 = COPY [[AND]](s32)
+ ; CHECK: RET_ReallyLR implicit %w0
+ bb.0:
+ successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ liveins: %w0
+ ; Test that we properly legalize a phi with a predecessor that's empty
+
+
+
+
+ %0(s32) = COPY %w0
+ %1(s32) = G_CONSTANT i32 0
+ %3(s32) = G_CONSTANT i32 3
+ %6(s32) = G_CONSTANT i32 1
+ %2(s1) = G_ICMP intpred(ugt), %0(s32), %1
+ %4(s32) = G_ADD %0, %3
+ %5(s1) = G_TRUNC %4(s32)
+ G_BRCOND %2(s1), %bb.1
+ G_BR %bb.2
+
+ bb.1:
+ successors: %bb.3(0x80000000)
+
+ %7(s32) = G_ADD %0, %6
+ %8(s1) = G_TRUNC %7(s32)
+ G_BR %bb.3
+
+ bb.2:
+ successors: %bb.3(0x80000000)
+
+
+ bb.3:
+ %9(s1) = G_PHI %8(s1), %bb.1, %5(s1), %bb.2
+ %10(s32) = G_ZEXT %9(s1)
+ %w0 = COPY %10(s32)
+ RET_ReallyLR implicit %w0
+
+...
+---
+name: legalize_phi_loop
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: _, preferred-register: '' }
+ - { id: 1, class: _, preferred-register: '' }
+ - { id: 2, class: _, preferred-register: '' }
+ - { id: 3, class: _, preferred-register: '' }
+ - { id: 4, class: _, preferred-register: '' }
+ - { id: 5, class: _, preferred-register: '' }
+ - { id: 6, class: _, preferred-register: '' }
+ - { id: 7, class: _, preferred-register: '' }
+liveins:
+body: |
+ ; CHECK-LABEL: name: legalize_phi_loop
+ ; CHECK: bb.0:
+ ; CHECK: successors: %bb.1(0x80000000)
+ ; CHECK: liveins: %w0
+ ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+ ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+ ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; CHECK: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[C1]](s32)
+ ; CHECK: bb.1:
+ ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK: [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC]](s16), %bb.0, %14(s16), %bb.1
+ ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+ ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[C]](s32)
+ ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[ANYEXT]], [[COPY1]]
+ ; CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[ADD]](s32)
+ ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[ADD]](s32)
+ ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY2]], [[C2]]
+ ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[AND]](s32), [[COPY]]
+ ; CHECK: [[TRUNC2:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+ ; CHECK: [[TRUNC3:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+ ; CHECK: G_BRCOND [[TRUNC2]](s1), %bb.1
+ ; CHECK: bb.2:
+ ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK: [[COPY3:%[0-9]+]]:_(s32) = COPY [[ADD]](s32)
+ ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[COPY3]], [[C3]]
+ ; CHECK: %w0 = COPY [[AND1]](s32)
+ ; CHECK: RET_ReallyLR implicit %w0
+ bb.0:
+ successors: %bb.1(0x80000000)
+ liveins: %w0
+ ; Test that we properly legalize a phi that uses a value from the same BB
+
+ %0(s32) = COPY %w0
+ %2(s8) = G_CONSTANT i8 1
+ %7(s8) = G_CONSTANT i8 0
+
+ bb.1:
+ successors: %bb.1(0x40000000), %bb.3(0x40000000)
+
+ %1(s8) = G_PHI %7(s8), %bb.0, %3(s8), %bb.1
+ %3(s8) = G_ADD %1, %2
+ %4(s32) = G_ZEXT %3(s8)
+ %5(s1) = G_ICMP intpred(ugt), %4(s32), %0
+ G_BRCOND %5(s1), %bb.1
+
+ bb.3:
+ %6(s32) = G_ZEXT %3(s8)
+ %w0 = COPY %6(s32)
+ RET_ReallyLR implicit %w0
+
+...
+---
+name: legalize_phi_cycle
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: _, preferred-register: '' }
+ - { id: 1, class: _, preferred-register: '' }
+ - { id: 2, class: _, preferred-register: '' }
+ - { id: 3, class: _, preferred-register: '' }
+ - { id: 4, class: _, preferred-register: '' }
+liveins:
+body: |
+ ; CHECK-LABEL: name: legalize_phi_cycle
+ ; CHECK: bb.0:
+ ; CHECK: successors: %bb.1(0x80000000)
+ ; CHECK: liveins: %w0
+ ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+ ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; CHECK: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[C]](s32)
+ ; CHECK: bb.1:
+ ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK: [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC]](s16), %bb.0, %8(s16), %bb.1
+ ; CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[PHI]](s16)
+ ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+ ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C1]]
+ ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[AND]](s32), [[COPY]]
+ ; CHECK: [[TRUNC2:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+ ; CHECK: [[COPY1:%[0-9]+]]:_(s16) = COPY [[PHI]](s16)
+ ; CHECK: G_BRCOND [[TRUNC2]](s1), %bb.1
+ ; CHECK: bb.2:
+ ; CHECK: %w0 = COPY [[AND]](s32)
+ ; CHECK: RET_ReallyLR implicit %w0
+ bb.0:
+ successors: %bb.1(0x80000000)
+ liveins: %w0
+ ; Test that we properly legalize a phi that uses itself
+
+
+ %0(s32) = COPY %w0
+ %4(s8) = G_CONSTANT i8 0
+
+ bb.1:
+ successors: %bb.1(0x40000000), %bb.3(0x40000000)
+
+ %1(s8) = G_PHI %4(s8), %bb.0, %1(s8), %bb.1
+ %2(s32) = G_ZEXT %1(s8)
+ %3(s1) = G_ICMP intpred(ugt), %2(s32), %0
+ G_BRCOND %3(s1), %bb.1
+
+ bb.3:
+ %w0 = COPY %2(s32)
+ RET_ReallyLR implicit %w0
+
+...
+---
+name: legalize_phi_same_bb
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: _, preferred-register: '' }
+ - { id: 1, class: _, preferred-register: '' }
+ - { id: 2, class: _, preferred-register: '' }
+ - { id: 3, class: _, preferred-register: '' }
+ - { id: 4, class: _, preferred-register: '' }
+ - { id: 5, class: _, preferred-register: '' }
+ - { id: 6, class: _, preferred-register: '' }
+ - { id: 7, class: _, preferred-register: '' }
+ - { id: 8, class: _, preferred-register: '' }
+ - { id: 9, class: _, preferred-register: '' }
+ - { id: 10, class: _, preferred-register: '' }
+ - { id: 11, class: _, preferred-register: '' }
+ - { id: 12, class: _, preferred-register: '' }
+ - { id: 13, class: _, preferred-register: '' }
+ - { id: 14, class: _, preferred-register: '' }
+liveins:
+body: |
+ ; CHECK-LABEL: name: legalize_phi_same_bb
+ ; CHECK: bb.0:
+ ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK: liveins: %w0
+ ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+ ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 3
+ ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+ ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 42
+ ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[COPY]](s32), [[C]]
+ ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+ ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C1]]
+ ; CHECK: G_BRCOND [[TRUNC]](s1), %bb.1
+ ; CHECK: G_BR %bb.2
+ ; CHECK: bb.1:
+ ; CHECK: successors: %bb.3(0x80000000)
+ ; CHECK: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C2]]
+ ; CHECK: [[TRUNC1:%[0-9]+]]:_(s16) = G_TRUNC [[ADD1]](s32)
+ ; CHECK: [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[ADD1]](s32)
+ ; CHECK: G_BR %bb.3
+ ; CHECK: bb.2:
+ ; CHECK: successors: %bb.3(0x80000000)
+ ; CHECK: [[TRUNC3:%[0-9]+]]:_(s16) = G_TRUNC [[C3]](s32)
+ ; CHECK: [[TRUNC4:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+ ; CHECK: bb.3:
+ ; CHECK: [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC2]](s16), %bb.1, [[TRUNC4]](s16), %bb.2
+ ; CHECK: [[PHI1:%[0-9]+]]:_(s16) = G_PHI [[TRUNC1]](s16), %bb.1, [[TRUNC3]](s16), %bb.2
+ ; CHECK: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+ ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C4]]
+ ; CHECK: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK: [[ANYEXT1:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI1]](s16)
+ ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[ANYEXT1]], [[C5]]
+ ; CHECK: [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[C]]1, [[C]]2
+ ; CHECK: %w0 = COPY [[C]]3(s32)
+ ; CHECK: RET_ReallyLR implicit %w0
+ bb.0:
+ successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ liveins: %w0
+ ; Make sure that we correctly insert the new legalized G_PHI at the
+ ; correct location (ie make sure G_PHIs are the first insts in the BB).
+
+
+
+
+ %0(s32) = COPY %w0
+ %1(s32) = G_CONSTANT i32 0
+ %3(s32) = G_CONSTANT i32 3
+ %6(s32) = G_CONSTANT i32 1
+ %14(s8) = G_CONSTANT i8 42
+ %2(s1) = G_ICMP intpred(ugt), %0(s32), %1
+ %4(s32) = G_ADD %0, %3
+ %5(s8) = G_TRUNC %4(s32)
+ G_BRCOND %2(s1), %bb.1
+ G_BR %bb.2
+
+ bb.1:
+ successors: %bb.3(0x80000000)
+
+ %7(s32) = G_ADD %0, %6
+ %8(s8) = G_TRUNC %7(s32)
+ G_BR %bb.3
+
+ bb.2:
+ successors: %bb.3(0x80000000)
+
+
+ bb.3:
+ %9(s8) = G_PHI %8(s8), %bb.1, %5(s8), %bb.2
+ %10(s8) = G_PHI %8(s8), %bb.1, %14(s8), %bb.2
+ %11(s32) = G_ZEXT %9(s8)
+ %12(s32) = G_ZEXT %10(s8)
+ %13(s32) = G_ADD %11, %12
+ %w0 = COPY %13(s32)
+ RET_ReallyLR implicit %w0
+
+...
+---
+name: legalize_phi_diff_bb
+alignment: 2
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+tracksRegLiveness: true
+registers:
+ - { id: 0, class: _, preferred-register: '' }
+ - { id: 1, class: _, preferred-register: '' }
+ - { id: 2, class: _, preferred-register: '' }
+ - { id: 3, class: _, preferred-register: '' }
+ - { id: 4, class: _, preferred-register: '' }
+ - { id: 5, class: _, preferred-register: '' }
+ - { id: 6, class: _, preferred-register: '' }
+ - { id: 7, class: _, preferred-register: '' }
+ - { id: 8, class: _, preferred-register: '' }
+ - { id: 9, class: _, preferred-register: '' }
+ - { id: 10, class: _, preferred-register: '' }
+ - { id: 11, class: _, preferred-register: '' }
+ - { id: 12, class: _, preferred-register: '' }
+ - { id: 13, class: _, preferred-register: '' }
+ - { id: 14, class: _, preferred-register: '' }
+ - { id: 15, class: _, preferred-register: '' }
+liveins:
+body: |
+ ; CHECK-LABEL: name: legalize_phi_diff_bb
+ ; CHECK: bb.0:
+ ; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
+ ; CHECK: liveins: %w0, %w1
+ ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+ ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+ ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 3
+ ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+ ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 44
+ ; CHECK: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 43
+ ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[COPY]](s32), [[C]]
+ ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+ ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C1]]
+ ; CHECK: [[TRUNC1:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+ ; CHECK: [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+ ; CHECK: G_BRCOND [[TRUNC]](s1), %bb.1
+ ; CHECK: G_BR %bb.2
+ ; CHECK: bb.1:
+ ; CHECK: successors: %bb.2(0x40000000), %bb.1(0x40000000)
+ ; CHECK: [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC2]](s16), %bb.0, [[C]]2(s16), %bb.1
+ ; CHECK: [[TRUNC3:%[0-9]+]]:_(s8) = G_TRUNC [[PHI]](s16)
+ ; CHECK: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+ ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C5]]
+ ; CHECK: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND]], [[C2]]
+ ; CHECK: [[ICMP1:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[ADD1]](s32), [[C3]]
+ ; CHECK: [[TRUNC4:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP1]](s32)
+ ; CHECK: [[COPY1:%[0-9]+]]:_(s16) = COPY [[PHI]](s16)
+ ; CHECK: [[TRUNC5:%[0-9]+]]:_(s16) = G_TRUNC [[C4]](s32)
+ ; CHECK: G_BRCOND [[TRUNC4]](s1), %bb.2
+ ; CHECK: G_BR %bb.1
+ ; CHECK: bb.2:
+ ; CHECK: [[PHI1:%[0-9]+]]:_(s16) = G_PHI [[COPY1]](s16), %bb.1, [[TRUNC1]](s16), %bb.0
+ ; CHECK: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+ ; CHECK: [[ANYEXT1:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI1]](s16)
+ ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[C]]8, [[C]]7
+ ; CHECK: %w0 = COPY [[AND1]](s32)
+ ; CHECK: RET_ReallyLR implicit %w0
+ bb.0:
+ successors: %bb.1(0x40000000), %bb.3(0x40000000)
+ liveins: %w0, %w1
+ ; Make sure that we correctly legalize PHIs sharing common defs
+ ; in different BBs.
+
+
+
+ %0(s32) = COPY %w0
+ %1(s32) = COPY %w1
+ %2(s32) = G_CONSTANT i32 0
+ %4(s32) = G_CONSTANT i32 3
+ %9(s32) = G_CONSTANT i32 1
+ %11(s32) = G_CONSTANT i32 44
+ %15(s8) = G_CONSTANT i8 43
+ %3(s1) = G_ICMP intpred(ugt), %0(s32), %2
+ %5(s32) = G_ADD %0, %4
+ %6(s8) = G_TRUNC %5(s32)
+ G_BRCOND %3(s1), %bb.1
+ G_BR %bb.3
+
+ bb.1:
+ successors: %bb.3(0x40000000), %bb.1(0x40000000)
+
+ %7(s8) = G_PHI %6(s8), %bb.0, %15(s8), %bb.1
+ %8(s32) = G_ZEXT %7(s8)
+ %10(s32) = G_ADD %8, %9
+ %12(s1) = G_ICMP intpred(ugt), %10(s32), %11
+ G_BRCOND %12(s1), %bb.3
+ G_BR %bb.1
+
+ bb.3:
+ %13(s8) = G_PHI %7(s8), %bb.1, %6(s8), %bb.0
+ %14(s32) = G_ZEXT %13(s8)
+ %w0 = COPY %14(s32)
+ RET_ReallyLR implicit %w0
+
+...
generated by cgit v1.3 (git 2.53.0) at 2026-09-10 19:01:34 +0000