-; RUN: llc < %s -mtriple=i686-pc-linux | FileCheck %s
+; RUN: llc < %s -mtriple=i686-pc-linux | FileCheck %s -check-prefix=LINUX -check-prefix=CHECK
+; RUN: llc < %s -mtriple=i686-apple-darwin | FileCheck %s -check-prefix=DARWIN -check-prefix=CHECK
declare i32 @__gxx_personality_v0(...)
declare void @good(i32 %a, i32 %b, i32 %c, i32 %d)
declare void @large(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f)
declare void @empty()
-; We use an invoke, and expect a .cfi_escape GNU_ARGS_SIZE with size 16
-; before the invocation
-; CHECK-LABEL: test1:
-; CHECK: .cfi_escape 0x2e, 0x10
-; CHECK-NEXT: pushl $4
-; CHECK-NEXT: pushl $3
-; CHECK-NEXT: pushl $2
-; CHECK-NEXT: pushl $1
-; CHECK-NEXT: call
-; CHECK-NEXT: addl $16, %esp
-define void @test1() optsize personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+; When we use an invoke, and have FP, we expect a .cfi_escape GNU_ARGS_SIZE
+; with size 16 before the invocation. Without FP, we expect.cfi_adjust_cfa_offset
+; before and after.
+; Darwin should not generate pushes in neither circumstance.
+; CHECK-LABEL: test1_nofp:
+; LINUX: .cfi_escape 0x2e, 0x10
+; LINUX: .cfi_adjust_cfa_offset 16
+; LINUX-NEXT: pushl $4
+; LINUX-NEXT: pushl $3
+; LINUX-NEXT: pushl $2
+; LINUX-NEXT: pushl $1
+; LINUX-NEXT: call
+; LINUX-NEXT: addl $16, %esp
+; LINUX: .cfi_adjust_cfa_offset -16
+; DARWIN-NOT: .cfi_escape
+; DARWIN-NOT: pushl
+define void @test1_nofp() #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+ invoke void @good(i32 1, i32 2, i32 3, i32 4)
+ to label %continue unwind label %cleanup
+continue:
+ ret void
+cleanup:
+ landingpad { i8*, i32 }
+ cleanup
+ ret void
+}
+
+; CHECK-LABEL: test1_fp:
+; LINUX: .cfi_escape 0x2e, 0x10
+; LINUX-NEXT: pushl $4
+; LINUX-NEXT: pushl $3
+; LINUX-NEXT: pushl $2
+; LINUX-NEXT: pushl $1
+; LINUX-NEXT: call
+; LINUX-NEXT: addl $16, %esp
+; DARWIN: pushl %ebp
+; DARWIN-NOT: .cfi_escape
+; DARWIN-NOT: pushl
+define void @test1_fp() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
entry:
invoke void @good(i32 1, i32 2, i32 3, i32 4)
to label %continue unwind label %cleanup
}
; If the function has no handlers, we don't need to generate GNU_ARGS_SIZE,
-; even if it has an unwind table.
-; CHECK-LABEL: test2:
+; even if it has an unwind table. Without FP, we still need cfi_adjust_cfa_offset,
+; so darwin should not generate pushes.
+; CHECK-LABEL: test2_nofp:
+; LINUX-NOT: .cfi_escape
+; LINUX: .cfi_adjust_cfa_offset 16
+; LINUX-NEXT: pushl $4
+; LINUX-NEXT: pushl $3
+; LINUX-NEXT: pushl $2
+; LINUX-NEXT: pushl $1
+; LINUX-NEXT: call
+; LINUX-NEXT: addl $16, %esp
+; LINUX: .cfi_adjust_cfa_offset -16
+; DARWIN-NOT: .cfi_escape
+; DARWIN-NOT: pushl
+define void @test2_nofp() #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+ call void @good(i32 1, i32 2, i32 3, i32 4)
+ ret void
+}
+
+; CHECK-LABEL: test2_fp:
; CHECK-NOT: .cfi_escape
+; CHECK-NOT: .cfi_adjust_cfa_offset
; CHECK: pushl $4
; CHECK-NEXT: pushl $3
; CHECK-NEXT: pushl $2
; CHECK-NEXT: pushl $1
; CHECK-NEXT: call
-; CHECK-NEXT: addl $16, %esp
-define void @test2() optsize personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+; CHECK-NEXT: addl $24, %esp
+define void @test2_fp() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
entry:
call void @good(i32 1, i32 2, i32 3, i32 4)
ret void
}
-; If we did not end up using any pushes, no need for GNU_ARGS_SIZE anywhere
-; CHECK-LABEL: test3:
-; CHECK-NOT: .cfi_escape
-; CHECK-NOT: pushl
-; CHECK: retl
-define void @test3() optsize personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+; If we did not end up using any pushes, no need for GNU_ARGS_SIZE or
+; cfi_adjust_cfa_offset.
+; CHECK-LABEL: test3_nofp:
+; LINUX-NOT: .cfi_escape
+; LINUX-NOT: .cfi_adjust_cfa_offset
+; LINUX-NOT: pushl
+; LINUX: retl
+define void @test3_nofp() #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+ invoke void @empty()
+ to label %continue unwind label %cleanup
+continue:
+ ret void
+cleanup:
+ landingpad { i8*, i32 }
+ cleanup
+ ret void
+}
+
+; If we did not end up using any pushes, no need for GNU_ARGS_SIZE or
+; cfi_adjust_cfa_offset.
+; CHECK-LABEL: test3_fp:
+; LINUX: pushl %ebp
+; LINUX-NOT: .cfi_escape
+; LINUX-NOT: .cfi_adjust_cfa_offset
+; LINUX-NOT: pushl
+; LINUX: retl
+define void @test3_fp() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
entry:
invoke void @empty()
to label %continue unwind label %cleanup
; Different sized stacks need different GNU_ARGS_SIZEs
; CHECK-LABEL: test4:
-; CHECK: .cfi_escape 0x2e, 0x10
-; CHECK-NEXT: pushl $4
-; CHECK-NEXT: pushl $3
-; CHECK-NEXT: pushl $2
-; CHECK-NEXT: pushl $1
-; CHECK-NEXT: call
-; CHECK-NEXT: addl $16, %esp
-; CHECK: .cfi_escape 0x2e, 0x20
-; CHECK-NEXT: subl $8, %esp
-; CHECK-NEXT: pushl $11
-; CHECK-NEXT: pushl $10
-; CHECK-NEXT: pushl $9
-; CHECK-NEXT: pushl $8
-; CHECK-NEXT: pushl $7
-; CHECK-NEXT: pushl $6
-; CHECK-NEXT: calll large
-; CHECK-NEXT: addl $32, %esp
-define void @test4() optsize personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+; LINUX: .cfi_escape 0x2e, 0x10
+; LINUX-NEXT: pushl $4
+; LINUX-NEXT: pushl $3
+; LINUX-NEXT: pushl $2
+; LINUX-NEXT: pushl $1
+; LINUX-NEXT: call
+; LINUX-NEXT: addl $16, %esp
+; LINUX: .cfi_escape 0x2e, 0x20
+; LINUX: subl $8, %esp
+; LINUX-NEXT: pushl $11
+; LINUX-NEXT: pushl $10
+; LINUX-NEXT: pushl $9
+; LINUX-NEXT: pushl $8
+; LINUX-NEXT: pushl $7
+; LINUX-NEXT: pushl $6
+; LINUX-NEXT: calll large
+; LINUX-NEXT: addl $32, %esp
+define void @test4() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
entry:
invoke void @good(i32 1, i32 2, i32 3, i32 4)
to label %continue1 unwind label %cleanup
}
; If we did use pushes, we need to reset GNU_ARGS_SIZE before a call
-; without parameters
-; CHECK-LABEL: test5:
-; CHECK: .cfi_escape 0x2e, 0x10
-; CHECK-NEXT: pushl $4
-; CHECK-NEXT: pushl $3
-; CHECK-NEXT: pushl $2
-; CHECK-NEXT: pushl $1
-; CHECK-NEXT: call
-; CHECK-NEXT: addl $16, %esp
-; CHECK: .cfi_escape 0x2e, 0x00
-; CHECK-NEXT: call
-define void @test5() optsize personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+; without parameters, but don't need to adjust the cfa offset
+; CHECK-LABEL: test5_nofp:
+; LINUX: .cfi_escape 0x2e, 0x10
+; LINUX: .cfi_adjust_cfa_offset 16
+; LINUX-NEXT: pushl $4
+; LINUX-NEXT: pushl $3
+; LINUX-NEXT: pushl $2
+; LINUX-NEXT: pushl $1
+; LINUX-NEXT: call
+; LINUX-NEXT: addl $16, %esp
+; LINUX: .cfi_adjust_cfa_offset -16
+; LINUX-NOT: .cfi_adjust_cfa_offset
+; LINUX: .cfi_escape 0x2e, 0x00
+; LINUX-NOT: .cfi_adjust_cfa_offset
+; LINUX: call
+define void @test5_nofp() #0 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+ invoke void @good(i32 1, i32 2, i32 3, i32 4)
+ to label %continue1 unwind label %cleanup
+continue1:
+ invoke void @empty()
+ to label %continue2 unwind label %cleanup
+continue2:
+ ret void
+cleanup:
+ landingpad { i8*, i32 }
+ cleanup
+ ret void
+}
+
+; CHECK-LABEL: test5_fp:
+; LINUX: .cfi_escape 0x2e, 0x10
+; LINUX-NEXT: pushl $4
+; LINUX-NEXT: pushl $3
+; LINUX-NEXT: pushl $2
+; LINUX-NEXT: pushl $1
+; LINUX-NEXT: call
+; LINUX-NEXT: addl $16, %esp
+; LINUX: .cfi_escape 0x2e, 0x00
+; LINUX-NOT: .cfi_adjust_cfa_offset
+; LINUX: call
+define void @test5_fp() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
entry:
invoke void @good(i32 1, i32 2, i32 3, i32 4)
to label %continue1 unwind label %cleanup
ret void
}
-; This is actually inefficient - we don't need to repeat the .cfi_escape twice.
+; FIXME: This is actually inefficient - we don't need to repeat the .cfi_escape twice.
; CHECK-LABEL: test6:
-; CHECK: .cfi_escape 0x2e, 0x10
-; CHECK: call
-; CHECK: .cfi_escape 0x2e, 0x10
-; CHECK: call
-define void @test6() optsize personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+; LINUX: .cfi_escape 0x2e, 0x10
+; LINUX: call
+; LINUX: .cfi_escape 0x2e, 0x10
+; LINUX: call
+define void @test6() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
entry:
invoke void @good(i32 1, i32 2, i32 3, i32 4)
to label %continue1 unwind label %cleanup
cleanup
ret void
}
+
+; Darwin should generate pushes in the presense of FP and an unwind table,
+; but not FP and invoke.
+; CHECK-LABEL: test7:
+; DARWIN: pushl %ebp
+; DARWIN: movl %esp, %ebp
+; DARWIN: .cfi_def_cfa_register %ebp
+; DARWIN-NOT: .cfi_adjust_cfa_offset
+; DARWIN: pushl $4
+; DARWIN-NEXT: pushl $3
+; DARWIN-NEXT: pushl $2
+; DARWIN-NEXT: pushl $1
+; DARWIN-NEXT: call
+define void @test7() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+ call void @good(i32 1, i32 2, i32 3, i32 4)
+ ret void
+}
+
+; CHECK-LABEL: test8:
+; DARWIN: pushl %ebp
+; DARWIN: movl %esp, %ebp
+; DARWIN-NOT: .cfi_adjust_cfa_offset
+; DARWIN-NOT: pushl
+define void @test8() #1 personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
+entry:
+ invoke void @good(i32 1, i32 2, i32 3, i32 4)
+ to label %continue unwind label %cleanup
+continue:
+ ret void
+cleanup:
+ landingpad { i8*, i32 }
+ cleanup
+ ret void
+}
+
+attributes #0 = { optsize }
+attributes #1 = { optsize "no-frame-pointer-elim"="true" }
projects / oota-llvm.git / blobdiff