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103 lines
2.4 KiB
103 lines
2.4 KiB
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; Test shortening of NILL to NILF when the result is used as a shift amount.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Test logical shift right.
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define i32 @f1(i32 %a, i32 %sh) {
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; CHECK-LABEL: f1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: nill %r3, 31
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; CHECK-NEXT: srl %r2, 0(%r3)
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; CHECK-NEXT: br %r14
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%and = and i32 %sh, 31
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%shift = lshr i32 %a, %and
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ret i32 %shift
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}
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; Test arithmetic shift right.
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define i32 @f2(i32 %a, i32 %sh) {
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; CHECK-LABEL: f2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: nill %r3, 31
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; CHECK-NEXT: sra %r2, 0(%r3)
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; CHECK-NEXT: br %r14
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%and = and i32 %sh, 31
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%shift = ashr i32 %a, %and
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ret i32 %shift
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}
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; Test shift left.
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define i32 @f3(i32 %a, i32 %sh) {
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; CHECK-LABEL: f3:
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; CHECK: # %bb.0:
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; CHECK-NEXT: nill %r3, 31
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; CHECK-NEXT: sll %r2, 0(%r3)
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; CHECK-NEXT: br %r14
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%and = and i32 %sh, 31
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%shift = shl i32 %a, %and
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ret i32 %shift
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}
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; Test 64-bit logical shift right.
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define i64 @f4(i64 %a, i64 %sh) {
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; CHECK-LABEL: f4:
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; CHECK: # %bb.0:
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; CHECK-NEXT: nill %r3, 31
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; CHECK-NEXT: srlg %r2, %r2, 0(%r3)
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; CHECK-NEXT: br %r14
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%and = and i64 %sh, 31
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%shift = lshr i64 %a, %and
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ret i64 %shift
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}
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; Test 64-bit arithmetic shift right.
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define i64 @f5(i64 %a, i64 %sh) {
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; CHECK-LABEL: f5:
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; CHECK: # %bb.0:
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; CHECK-NEXT: nill %r3, 31
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; CHECK-NEXT: srag %r2, %r2, 0(%r3)
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; CHECK-NEXT: br %r14
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%and = and i64 %sh, 31
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%shift = ashr i64 %a, %and
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ret i64 %shift
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}
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; Test 64-bit shift left.
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define i64 @f6(i64 %a, i64 %sh) {
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; CHECK-LABEL: f6:
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; CHECK: # %bb.0:
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; CHECK-NEXT: nill %r3, 31
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; CHECK-NEXT: sllg %r2, %r2, 0(%r3)
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; CHECK-NEXT: br %r14
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%and = and i64 %sh, 31
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%shift = shl i64 %a, %and
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ret i64 %shift
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}
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; Test shift with negative 32-bit value.
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define i32 @f8(i32 %a, i32 %sh, i32 %test) {
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; CHECK-LABEL: f8:
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; CHECK: # %bb.0:
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; CHECK-NEXT: nill %r3, 65529
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; CHECK-NEXT: sll %r2, 0(%r3)
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; CHECK-NEXT: br %r14
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%and = and i32 %sh, -7
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%shift = shl i32 %a, %and
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ret i32 %shift
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}
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; Test shift with negative 64-bit value.
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define i64 @f9(i64 %a, i64 %sh, i64 %test) {
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; CHECK-LABEL: f9:
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; CHECK: # %bb.0:
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; CHECK-NEXT: nill %r3, 65529
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; CHECK-NEXT: sllg %r2, %r2, 0(%r3)
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; CHECK-NEXT: br %r14
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%and = and i64 %sh, -7
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%shift = shl i64 %a, %and
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ret i64 %shift
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}
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