mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
9e495c518c
Speculating things is generally good. SI+ has instructions for these for 32-bit values. This is still probably better even with the expansion for 64-bit values, although it is odd that this callback doesn't have the size as a parameter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225822 91177308-0d34-0410-b5e6-96231b3b80d8
225 lines
6.5 KiB
LLVM
225 lines
6.5 KiB
LLVM
; RUN: opt -S -codegenprepare -mtriple=r600-unknown-unknown -mcpu=SI < %s | FileCheck -check-prefix=SI -check-prefix=ALL %s
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define i64 @test1(i64 %A) {
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; ALL-LABEL: @test1(
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; SI: [[CTLZ:%[A-Za-z0-9]+]] = call i64 @llvm.ctlz.i64(i64 %A, i1 false)
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; SI-NEXT: ret i64 [[CTLZ]]
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entry:
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%tobool = icmp eq i64 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i64 @llvm.ctlz.i64(i64 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i64 [ %0, %cond.true ], [ 64, %entry ]
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ret i64 %cond
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}
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define i32 @test2(i32 %A) {
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; ALL-LABEL: @test2(
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; SI: [[CTLZ:%[A-Za-z0-9]+]] = call i32 @llvm.ctlz.i32(i32 %A, i1 false)
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; SI-NEXT: ret i32 [[CTLZ]]
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entry:
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%tobool = icmp eq i32 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i32 @llvm.ctlz.i32(i32 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i32 [ %0, %cond.true ], [ 32, %entry ]
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ret i32 %cond
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}
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define signext i16 @test3(i16 signext %A) {
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; ALL-LABEL: @test3(
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; SI: [[CTLZ:%[A-Za-z0-9]+]] = call i16 @llvm.ctlz.i16(i16 %A, i1 false)
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; SI-NEXT: ret i16 [[CTLZ]]
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entry:
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%tobool = icmp eq i16 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i16 @llvm.ctlz.i16(i16 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i16 [ %0, %cond.true ], [ 16, %entry ]
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ret i16 %cond
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}
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define i64 @test1b(i64 %A) {
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; ALL-LABEL: @test1b(
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; SI: [[CTTZ:%[A-Za-z0-9]+]] = call i64 @llvm.cttz.i64(i64 %A, i1 false)
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; SI-NEXT: ret i64 [[CTTZ]]
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entry:
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%tobool = icmp eq i64 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i64 @llvm.cttz.i64(i64 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i64 [ %0, %cond.true ], [ 64, %entry ]
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ret i64 %cond
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}
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define i32 @test2b(i32 %A) {
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; ALL-LABEL: @test2b(
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; SI: [[CTTZ:%[A-Za-z0-9]+]] = call i32 @llvm.cttz.i32(i32 %A, i1 false)
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; SI-NEXT: ret i32 [[CTTZ]]
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entry:
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%tobool = icmp eq i32 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i32 @llvm.cttz.i32(i32 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i32 [ %0, %cond.true ], [ 32, %entry ]
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ret i32 %cond
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}
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define signext i16 @test3b(i16 signext %A) {
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; ALL-LABEL: @test3b(
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; SI: [[CTTZ:%[A-Za-z0-9]+]] = call i16 @llvm.cttz.i16(i16 %A, i1 false)
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; SI-NEXT: ret i16 [[CTTZ]]
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entry:
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%tobool = icmp eq i16 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i16 @llvm.cttz.i16(i16 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i16 [ %0, %cond.true ], [ 16, %entry ]
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ret i16 %cond
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}
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define i64 @test1c(i64 %A) {
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; ALL-LABEL: @test1c(
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; ALL: icmp eq i64 %A, 0
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; ALL: call i64 @llvm.ctlz.i64(i64 %A, i1 true)
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entry:
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%tobool = icmp eq i64 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i64 @llvm.ctlz.i64(i64 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i64 [ %0, %cond.true ], [ 63, %entry ]
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ret i64 %cond
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}
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define i32 @test2c(i32 %A) {
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; ALL-LABEL: @test2c(
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; ALL: icmp eq i32 %A, 0
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; ALL: call i32 @llvm.ctlz.i32(i32 %A, i1 true)
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entry:
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%tobool = icmp eq i32 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i32 @llvm.ctlz.i32(i32 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i32 [ %0, %cond.true ], [ 31, %entry ]
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ret i32 %cond
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}
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define signext i16 @test3c(i16 signext %A) {
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; ALL-LABEL: @test3c(
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; ALL: icmp eq i16 %A, 0
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; ALL: call i16 @llvm.ctlz.i16(i16 %A, i1 true)
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entry:
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%tobool = icmp eq i16 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i16 @llvm.ctlz.i16(i16 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i16 [ %0, %cond.true ], [ 15, %entry ]
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ret i16 %cond
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}
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define i64 @test1d(i64 %A) {
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; ALL-LABEL: @test1d(
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; ALL: icmp eq i64 %A, 0
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; ALL: call i64 @llvm.cttz.i64(i64 %A, i1 true)
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entry:
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%tobool = icmp eq i64 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i64 @llvm.cttz.i64(i64 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i64 [ %0, %cond.true ], [ 63, %entry ]
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ret i64 %cond
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}
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define i32 @test2d(i32 %A) {
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; ALL-LABEL: @test2d(
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; ALL: icmp eq i32 %A, 0
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; ALL: call i32 @llvm.cttz.i32(i32 %A, i1 true)
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entry:
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%tobool = icmp eq i32 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i32 @llvm.cttz.i32(i32 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i32 [ %0, %cond.true ], [ 31, %entry ]
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ret i32 %cond
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}
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define signext i16 @test3d(i16 signext %A) {
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; ALL-LABEL: @test3d(
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; ALL: icmp eq i16 %A, 0
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; ALL: call i16 @llvm.cttz.i16(i16 %A, i1 true)
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entry:
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%tobool = icmp eq i16 %A, 0
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br i1 %tobool, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = tail call i16 @llvm.cttz.i16(i16 %A, i1 true)
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br label %cond.end
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cond.end: ; preds = %entry, %cond.true
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%cond = phi i16 [ %0, %cond.true ], [ 15, %entry ]
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ret i16 %cond
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}
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declare i64 @llvm.ctlz.i64(i64, i1)
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declare i32 @llvm.ctlz.i32(i32, i1)
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declare i16 @llvm.ctlz.i16(i16, i1)
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declare i64 @llvm.cttz.i64(i64, i1)
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declare i32 @llvm.cttz.i32(i32, i1)
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declare i16 @llvm.cttz.i16(i16, i1)
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