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Diffstat (limited to 'test/CodeGen/SystemZ/fp-conv-04.ll')
-rw-r--r-- | test/CodeGen/SystemZ/fp-conv-04.ll | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/fp-conv-04.ll b/test/CodeGen/SystemZ/fp-conv-04.ll new file mode 100644 index 0000000000000..b7b516693430b --- /dev/null +++ b/test/CodeGen/SystemZ/fp-conv-04.ll @@ -0,0 +1,89 @@ +; Test extensions of f64 to f128. +; +; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s + +; Check register extension. +define void @f1(fp128 *%dst, double %val) { +; CHECK: f1: +; CHECK: lxdbr %f0, %f0 +; CHECK: std %f0, 0(%r2) +; CHECK: std %f2, 8(%r2) +; CHECK: br %r14 + %res = fpext double %val to fp128 + store fp128 %res, fp128 *%dst + ret void +} + +; Check the low end of the LXDB range. +define void @f2(fp128 *%dst, double *%ptr) { +; CHECK: f2: +; CHECK: lxdb %f0, 0(%r3) +; CHECK: std %f0, 0(%r2) +; CHECK: std %f2, 8(%r2) +; CHECK: br %r14 + %val = load double *%ptr + %res = fpext double %val to fp128 + store fp128 %res, fp128 *%dst + ret void +} + +; Check the high end of the aligned LXDB range. +define void @f3(fp128 *%dst, double *%base) { +; CHECK: f3: +; CHECK: lxdb %f0, 4088(%r3) +; CHECK: std %f0, 0(%r2) +; CHECK: std %f2, 8(%r2) +; CHECK: br %r14 + %ptr = getelementptr double *%base, i64 511 + %val = load double *%ptr + %res = fpext double %val to fp128 + store fp128 %res, fp128 *%dst + ret void +} + +; Check the next doubleword up, which needs separate address logic. +; Other sequences besides this one would be OK. +define void @f4(fp128 *%dst, double *%base) { +; CHECK: f4: +; CHECK: aghi %r3, 4096 +; CHECK: lxdb %f0, 0(%r3) +; CHECK: std %f0, 0(%r2) +; CHECK: std %f2, 8(%r2) +; CHECK: br %r14 + %ptr = getelementptr double *%base, i64 512 + %val = load double *%ptr + %res = fpext double %val to fp128 + store fp128 %res, fp128 *%dst + ret void +} + +; Check negative displacements, which also need separate address logic. +define void @f5(fp128 *%dst, double *%base) { +; CHECK: f5: +; CHECK: aghi %r3, -8 +; CHECK: lxdb %f0, 0(%r3) +; CHECK: std %f0, 0(%r2) +; CHECK: std %f2, 8(%r2) +; CHECK: br %r14 + %ptr = getelementptr double *%base, i64 -1 + %val = load double *%ptr + %res = fpext double %val to fp128 + store fp128 %res, fp128 *%dst + ret void +} + +; Check that LXDB allows indices. +define void @f6(fp128 *%dst, double *%base, i64 %index) { +; CHECK: f6: +; CHECK: sllg %r1, %r4, 3 +; CHECK: lxdb %f0, 800(%r1,%r3) +; CHECK: std %f0, 0(%r2) +; CHECK: std %f2, 8(%r2) +; CHECK: br %r14 + %ptr1 = getelementptr double *%base, i64 %index + %ptr2 = getelementptr double *%ptr1, i64 100 + %val = load double *%ptr2 + %res = fpext double %val to fp128 + store fp128 %res, fp128 *%dst + ret void +} |